My boys just updated today. Kindle fire HD works fine, but 2 Kindle Fires shut down & won't turn back on. Power button is green, but screen is black. Heard of any other issues with the Kindle fire & the update?
Uh, how about you send Amazon an email about this? Random people in the Future Updates discussion board for Minecraft aren't going to be able to help you with tablet support.
Kindle Fire and new update